THE most accurate determinations of the atomic weight of chlorine indicate that on earth this element consists of 76.6 5 per cent. of chlorine of isotopic number 1 (atomic weight = 35) and of 23.3 5 ...

Standard atomic weights, those numbers emblazoned under the elements on the periodic table, were once thought of as unchanging constants of nature. But researchers have tweaked the atomic weights of ...

Proceedings of the National Academy of Sciences of the United States of America, Vol. 11, No. 10 (Oct. 15, 1925), pp. 624-628 (5 pages) ...

IN NATURE of April 22, 1920 (vol. 105, p. 230) Harkins and Broeker reported that they had obtained a partial separation of the element chlorine into isotopes. Five determinations made early in ...

Researchers have imaged the atoms at the surface of the light-absorbing layer in a new type of next-generation solar cells, made from a crystal material called metal-halide perovskite. Their findings ...

Scientists have imaged atoms on the surface layer of perovskite – a revolutionary crystal material that harvests light in next-gen solar cells The study reveals how chlorine, a dopant that boosts the ...